Bats are the only mammal capable of flying and are so highly evolved to be capable of pinpointing a single insect flying in the pitch black and plucking it out of the air using echo location.
蝙蝠是唯一会飞的哺乳动物，进化程度很高，能够在一片漆黑中精确定位一只飞虫的位置，并利用回波定位准确地从空中捕捉。
If you're appending only a single line instead of multiple lines or an entire file, you can use echo instead of cat.
如果您仅追加单行而不是多行或整个文件，您可以使用echo而不是cat。
Did you also notice the use of double-quoted strings instead of single-quoted strings on the echo line?
另外，你注意到在echo一行它使用了双引号而不是单引号吗？
you could use the following code to replace the multi-echo statement, and UNIX would only need to process a single execution
可以用以下代码替换多个echo语句，UNIX 只需处理一次执行
Some methods of enhancing detection performance in dealing with the single pulse echo signal and the multi-period pulse bunch echo signal by accumulating are summarized.
阐释了单个脉冲回波信号和多周期脉冲串回波信号，利用积累来提高检测性能的多种方法。
Single-shot echo planar image;
单次激发平面回波成像；
Results:The cervical lymphangioma in fetus was characterized by a cystic mass, single or multilocular with septations, on the back or both sides of the neck, the echo and signal is uniform or not.
结果：囊性淋巴管瘤的影像学特征为头颈部两侧或背侧的囊性包块，呈单囊或多囊表现，回声或信号可均匀或不均匀，病变范围可延伸至枕部或肩背部及纵隔。
In this way I plan to combine 'intelligible and' unintelligible 'versions into the single piece Echo of the Working Class.
这样的话，一个“听不懂”的版本和一个“听得懂”的版本构成了一个完整的“工人的回声”这件作品。
It presents a new method for automatically segmenting brain parenchyma and cerebrospinal fluid in routine single-echo MR images. This method is based on the weak membrane model.
提出一种自动分割单通道磁共振脑图像的新方法，这种方法建立在弱膜模型的基础上。
Just imagine, a single page are similar to the conceptualization and echo is evident that it has made the memory?
试想，一个版面多是单一化与概念化的大同小异，人云亦云，可想而知，它的记忆度有多少？
Both channel and echo response can be shortened at random with a single FIR equalizer by following the minimum mean square error rule.
使用最小均方误差准则，用一个FIR均衡器联合缩短信息与回波冲激响应，有效地缩短了回波和信道冲激响应长度。
The simulation of the system of single-photon detection for the space targets is carried out based on these models to get the number of laser photon echo which is simulate value.
利用所建立的模型对探测系统进行仿真，得到激光回波光子数模型仿真值。
The simulation of the system of single-photon detection for the space targets is carried out based on these models to get the number of laser photon echo which is simulate value.
利用所建立的模型对探测系统进行仿真，得到激光回波光子数模型仿真值。
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